Title:
HINGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/111634
Kind Code:
A1
Abstract:
Provided is a hinge device which, both before and after the change of friction torque that changes, can accurately ensure the friction torque, and can be prevented from being axially lengthened. A hinge device is provided with a shaft member (2) which is rotatably supported by a stationary-side bracket (3), a cam member (5) which is provided to be axially movable with the rotation thereof being restricted by the shaft member (2), a biasing means (4) which applies a bias in a direction in which the cam member (5) and the bracket (3) are in contact with each other to generate friction torque, and a protruding part (11) and a recessed part (12) which are formed in the cam member (5) and the bracket (3) so as to be fitted to each other. The protruding part or the recessed part is formed into a shape such that the friction torque changes according to the rotation angle of the shaft member (2), and the biasing means (4) has the inflection point of a spring constant between the maximum value and the minimum value of the friction torque.
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Inventors:
SAITO MAKOTO (JP)
KOBAYASHI TAKAO (JP)
KOBAYASHI TAKAO (JP)
Application Number:
PCT/JP2012/053310
Publication Date:
August 23, 2012
Filing Date:
February 13, 2012
Export Citation:
Assignee:
NHK SPRING CO LTD (JP)
SAITO MAKOTO (JP)
KOBAYASHI TAKAO (JP)
SAITO MAKOTO (JP)
KOBAYASHI TAKAO (JP)
International Classes:
F16C11/10; F16C11/04; G06F1/16
Domestic Patent References:
| WO2010041765A1 | 2010-04-15 | |||
| WO2000077413A1 | 2000-12-21 |
Foreign References:
| JP2005163965A | 2005-06-23 | |||
| JP2005140152A | 2005-06-02 |
Attorney, Agent or Firm:
KYOSEI INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation symbiosis international patent firm (JP)
Patent business corporation symbiosis international patent firm (JP)
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Claims: